Daily water intake calculator
How much water to drink a day for your weight and exercise.
How it works
A practical baseline is 35 ml per kg of body weight a day.
Add roughly 0.5-1 litre per hour of exercise, and more in hot, humid weather.
Pale-yellow urine is the simplest check that you are drinking enough.
Read more: Sleep and recovery.
Track it every day, free
The Fit app turns these numbers into a daily plan for food, training and recovery, and adjusts them as you go. No account, and only you can read your data.